Gulluggs have long, needle-like noses and fly around in circles. They are found on SR388 in Phase 2. They frequently yield missiles when killed. These creatures share the same eye style with the Yakuza in Metroid Fusion, suggesting that there may be some relation between the species. They resemble mosquito heads with bat wings.
In the game Metroid II: Return of Samus, Gulluggs can be seen constantly circling around a small area in the air. If Samus comes into contact with them, they can deal an extraordinary amount of damage, especially if she is hit more than once at the same time. Without the extra protection of the Varia Suit, they can cause a staggering 12 points of damage with one touch.
"This creature flies around and around in the air."
- It is unknown if the Gullugg species was infected by the X Parasites, as Samus never encountered any Gullugg-X in Fusion.